The half life of a decaying substance is defined as the time at which the substance decreases to one-half of its original value. In this case, given hlf-life of 10 years and an original mass of 50 grams, after 10 years, the isotope mass becomes 50*0.5 or 25 grams. Answer is B.
Answer:
A= 3441
P = 260
Step-by-step explanation:
Area = l x w
93 x 37 = =3441
Perimeter = 2l + 2w
2(93) + 2(37) = 260
3^0 if zero is an exponent then the answer would be 1.
Answer:
5.75 yds left
Step-by-step explanation:
1.25 yds per bag*5 bags =6.25 yds used
She had 12 yds
12-6.25 =5.75
She has 5.75 yds left
Answer:
M= -7
Step-by-step explanation:
M+9=2
M =2-9
M=-7
